MIL-PRF-29504/4D
Mechanical shock. Mated connector assemblies shall be tested in accordance with the applicable
mechanical shock test listed below. Optical discontinuities shall be measured during the test. For
connectors of shell sizes 17 and greater, a minimum of four termini shall be monitored for
discontinuity. The change in optical transmittance shall be monitored after the test. The termini
shall be visually examined after the test to the extent feasible inside the connector. Termini shall
not be damaged and there shall be no loosening of parts. The requirement for optical discontinuity
shall be met during the test and the requirement for the change in optical transmittance shall be
met after the test. For testing, initially mate the connector assemblies and apply the specified
torque value. Mark the position after the torque has been applied and check/record position after
each impact. For a mating connector containing a coupling ring ratchet mechanism, do not tighten
the coupling ring after each impact if the connector is being tested in addition to the terminus.
Otherwise, retighten after each impact.
a. MIL-S-901. Mated connector assemblies shall be tested in accordance with MIL-S-901, grade
A, type B, class I. Standard shock fixture 4A for bulkhead mounting shall be used.
Supplement test fixture with mounting shall be performed as specified in NAVSEA Drawing
8283255.
b. Half-sine pulse. Mated connector assemblies shall be tested in accordance with TIA-455-14,
test condition D. Three shocks in each direction shall be applied along the three mutually
perpendicular axes of the test sample (18 shocks).
Vibration. Mated connector assemblies shall be tested for sinusoidal vibration in accordance with
the applicable vibration tests listed below. Optical discontinuities shall be measured during the
test. For connectors of shell sizes 17 and greater, a minimum of four termini shall be monitored
for discontinuity. The change in optical transmittance shall be monitored after the test. The
termini shall be visually examined after the test to the extent feasible inside the connector.
Termini shall not be damaged, and there shall be no loosening of parts, no backing off of the
coupling mechanism, and no other damage which can produce physical distortion or wear and
may result in fatigue of the mechanical parts. The requirement for optical discontinuity shall be
met during the test and the requirement for the change in optical transmittance shall be met after
the test. For testing, initially mate the connector assemblies and apply the specified torque value.
Mark the position after the torque has been applied and check/record position after each axis.
For a mating connector containing a coupling ring ratchet mechanism, do not tighten the coupling
ring during testing.
Sine vibration in accordance with 4.5.22.2.1 of MIL-DTL-38999 (60 G at ambient temperature
only). This cycle shall be performed 12 times in each of three mutually perpendicular directions
at ambient temperature. This results in a total of 36 cycles being applied for approximately 12
hours. The sequence shall be repeated twice. (36 hours total at ambient temperature).
Interruptions are permitted provided the requirements for rate of change and test duration are
met. Completion of cycling within any separate band is permissible before proceeding to the next
band.
Random vibration in accordance with 4.5.22.2.3 of MIL-DTL-38999 (41.7 G rms at a temperature
of 125oC).
Random vibration in accordance with 4.5.22.2.4 of MIL-DTL-38999 (49.5 G rms at an ambient
temperature).
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